She's in my tutor group at school.

她在学校里是指导我的那个小组的成员。

《牛津词典》

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In the last show before the break, the group competed against two other high school glee clubs, and won the competition.

VOA: special.2010.01.08

And I have actually seen evidence over the years, mercifully, just a small amount of evidence, but there are, in a group like this, always a few students who come in with a really strong background in high school.

这几年我已经见到了实例，令人感激的是，只有小部分人，但在这，像这样的一个小组，总有一些来到我们这的学生,在高中打下了良好的基础。

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And I went to the school where I was a member of a very small minority group.

而在我上的大学里,我则属于一个非常小的少数人群体。

普林斯顿公开课 - 人性课程节选

Staff at the school group's hotel said pupils and staff wept following the tragedy.

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And it could be a statement or question from any high school group of students.

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School group example: If you could swap one compulsory lesson for another subject, what would you do?

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